Network Security Engineer — Scale, Automate & Secure Global Infra

G-Research; Greater London; On-site; GBP 100,000 - GBP 125,000; Full time

Job summary

An advanced quantitative finance firm based in London is seeking an experienced Network Security Engineer. This role involves designing and maintaining robust network infrastructure to support cutting-edge research. Candidates will handle security systems, conduct audits, and collaborate with teams to align security initiatives. Ideal applicants have expertise in security frameworks, enterprise firewalls, and automated solutions. This position offers competitive compensation and great benefits, including a work-life balance and professional growth opportunities.

Benefits

Highly competitive compensation plus annual discretionary bonus

Lunch provided and dedicated barista bar

30 days’ annual leave

9% company pension contributions

Informal dress code

Comprehensive healthcare and life assurance

Cycle-to-work scheme

Monthly company events

Qualifications

• Deep technical expertise in network security engineering.
• Problem-solving instinct and strategic thinking.
• Ability to automate intelligently and deliver reliably at scale.

Responsibilities

• Designing and implementing security systems.
• Delivering high-quality designs for strategic initiatives.
• Conducting regular network security audits for compliance.
• Implementing change requests and managing escalations.

Skills

Security frameworks such as NIST, CIS or similar

Configuring and operating enterprise firewalls, e.g., Fortinet, Palo Alto

Web proxy technologies and traffic inspection

F5 (LTM / ASM / APM or similar)

Deep packet inspection and core security engineering principles

Networking fundamentals (TCP/IP, routing, switching, DNS)

Automation and scripting

Privileged Access Management solutions

Job description

An advanced quantitative finance firm based in London is seeking an experienced Network Security Engineer. This role involves designing and maintaining robust network infrastructure to support cutting-edge research. Candidates will handle security systems, conduct audits, and collaborate with teams to align security initiatives. Ideal applicants have expertise in security frameworks, enterprise firewalls, and automated solutions. This position offers competitive compensation and great benefits, including a work-life balance and professional growth opportunities.